| OCR Text |
Show 176 MR. F. G. PARSONS ON THE [Jan. 14, these combined muscles in the various animals dissected are the following:- Mgoxus 2-7 c. v. 1-7 ribs. Cricetus 3-7 „ 1-7 ,, Gerbillus 2-7 ,, 1-8 ,, Microtus 2-7 „ 1-8 „ Myodes 2-7 „ 1-8 „ Mus barbarus 2-7 „ 1-7 ,, „ rattus 2-7 ,, 1-7 ,, Rhizomys 1-7 ,, 1-8 „ Georychus 3-7 ,, 1-10 ,, Bathyergus 3-7 „ 1-10 „ Heteromys 2-7 „ 1-8 „ Serratus Posticus.-In the Myomorpha the anterior part of this muscle is always present and well marked ; it is usually inserted into the ribs from the 4th to the 7th, but in Cricetomys it is continued back to the 9th, and in Rhizomys to the 11th. In Georychus and Bathyergus it is inserted into the 6th, 7th, and 8th ribs. The posterior part of the serratus posticus was only seen in Microtus, Bathyergus, and Myodes; in the first it was inserted into the last 4, and in the two latter into the last 5 ribs. Fig. 10. i SPLEN.CAP. COMPLEX US. '/ 'ui TRACH . MA&. LEV.ANd.SCAP. SE^. POST. Neck-muscles of Hamster. |
